Are there any cosmetics that can lighten melasma scars?

I went to a dermatology clinic to get laser treatment to remove my freckles, following a friend's lead, but the spots where I had them are turning darker over time. I consulted with the doctor and explained the situation, but they keep telling me that it will fade over time...

My skin is getting more discolored, and I feel depressed. I've tried good face masks and regenerating cosmetics, but nothing works... Please tell me a good solution.